Abrams and his production company Bad Robot released a YouTube video called Hunka Junk (in reference to a line from Lando Calrissian in The Empire Strikes Back).

In the video, the camera glides underneath Han Solo's ship, accompanied by John Williams' iconic Star Wars music, before it switches to the score of The Dark Knight trilogy and settles on a shot of something attached to the ship.

A camouflaged Batmobile.

Captioned "HUNKA JUNK. @ZackSnyder #STARWARSvBATMANvSUPERMAN", the post from Bad Robot comes just over a week after Snyder revealed his official Batmobile photo.

It's the latest in their friendly online exchange of mash-up images, which began back in July when Snyder tweeted an picture of star Henry Cavill in a cloak and wielding a red lightsaber with the caption "#SuperJedi".

He followed it with an image of R2-D2 in the desert with Batman.

Bad Robot replied with a shot of C-3PO watching over Gotham, captioning it "THE C3PED CRUSADER", before Snyder shot back with a picture of Gotham police bundling an arrested Storm Trooper into their car, tweeting "Case closed".

* Star Wars: Episode VII releases in Australian cinemas on December 17, 2015.

* Batman v. Superman: Dawn of Justice releases in Australian cinemas on March 24, 2016.